Improvement in traction-engines



W. C. DOUTHETT.I

Traction Engine.

Patend. sept 1s,V 1870,

' Wwesses mitted from cranks h to pulley-wheels l, over which AA successively, as bars 'i ascend on the rear pulley-` iltuird giedre time @,.lliw

0F CHICAGO, ILLINOIS.

Letters Patent No. 107, 233,datecl September 13, 1870; antedated September 1,1870.

IMPROVEMENT IN TRACTION-NGINES.

The Schedule referred. to these Alite-'eters Patent and making part of the samek To all whom it maycoucernf.

Be it known that I, WILLIAM Doorrrn'rr, of Chicago, `in the State of Illinois, have invented anew and useful ImprovementA in Traction-Engines; andI do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawingand letters of reference marked thereon, making a part of this specification.

To enable those skilled in the art tomake and use this invention, `I now proceed to describe its construc tion and operation.

Similar letters in the drawing refer to like parts.

'lhe object 'of my invention is to provide a means of traction apart from the carrying-wheels, or in connec-y tion with them, by means of inclined levers, operated by means of chains, as is shown in gs. 1 and 2.

Figure 1 is a side view, showing levers worked 'by chains. 4

Figure2 is a plan view ofsame.

Figure 3 is aside view, and

Figure 4, a plan view, showing levers worked by means of cranks. Y

Figure 5 is a sectional view of propelling-foot.

Parts marked (t is theI supporting-frame.

c, carrying-wheels.' f

d, steering-.wheel and handle.

'71, cranks where power is applied.

A are propelling-levers. l

g, cog-wheels, by means of -which power. is transehains D are Vmade to revolve.

t, connecting-bars, to which levers A are attached.

Ihe chains D, being made to revolve continuously in the direction indicated by the arrows, lift the levers wheels b, and by means of' slides said levers are oarried up and forward in 'a horizontal or slightly inclined.

position by .chainsLnutil bars t reach the front of forward pulley-wheels b, when the foot of levers A are allowed to drop down and take hold of the ground, re-

taining this hold until bars t' are carried back to the rear of pulley-wheels b, thus giving traction or means of propulsion. y

Bars t', by means of a wrist, are' allowed to turn on their axes in chain D, thus permitting levers A always to retain the same end forward, the foot of said lever being toward the rear of machine.

In tig. 5, the foot c of levers A is shown. 'A variety of forms may be used, but the plan ofv` construction I deem best is an iron plate, fm, made vconvex on lower surface, aud supplied with projec-4 tions, and on upper part of Vwhich is a socket, m', in which the circular project-ion -onfoot of lever A' rests, being held in place by plate fm2 passing around said levers above projection, and boltedto lower plate m, in manner shown, so as to form aball-and-socketjoint, thus allowing the foot to adapt itself to the inequalities of the ground.

In gs'. 3 and 4is shown another mode of using ,levers fon propelling, which may perchance be used.

The method is as follows:

Rods's connect with cranks e and with slide-heads f, to which levers B are attached. Power is applied to crank-shaft at It, which, being made to revolve, gives alternate reciprocating motion to the levers B, allowing them to catch and hold on the ground alternately, while power is applied.

What I claim as my invention is 1. The combination of the foot @constructed as described, with the lever A, in manner and for-.the V purpose specified.

2. The combination of the pivoted levers A, chains D, and cross-bars t, in the manner described.

WILLIAM C. DOU'IHETIv Witnesses GEO. E. BROWN, C. O. BROWN. 

